Manifestation of the Gouy phase in strongly focused, radially polarized beams

Journal article (2013)
Faculty
Electrical Engineering, Mathematics and Computer Science (EEMCS) (TU Delft)
Copyright: © 2013 Optical Society of America
DOI: https://doi.org/doi:10.1364/OE.21.008331
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Published Date

28-03-2013

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Source:

Optics Express, 21 (7), 2013

ISSN:

1094-4087

Source:

http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-7-8331

Faculty

Electrical Engineering, Mathematics and Computer Science

Abstract

The Gouy phase, sometimes called the focal phase anomaly, is the curious effect that in the vicinity of its focus a diffracted field, compared to a non-diffracted, converging spherical wave of the same frequency, undergoes a rapid phase change by an amount of ?. We theoretically investigate the phase behavior and the polarization ellipse of a strongly focused, radially polarized beam. We find that the significant variation of the state of polarization in the focal region, is a manifestation of the different Gouy phases that the two electric field components undergo.

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